The Smart Float is a mobile observation platform integrated with profile detection drifting Argo buoy and autonomous underwater Glider

and is competent for multiple long-term and wide-range tasks like longitudinal profile measurement and transverse local measurement in a horizontal plane. Particularly

accurate positioning of buoys and bi-directional data transmission between buoy and shore station control system is the key to realize the"intelligentization"of buoys. A kind of satellite communication and positioning system based on Iridium satellite RF9523 RG terminal

which can implement functions of quick positioning of Smart Float

precise timing

bidirectional data communication of global stability and so on

is proposed. Meantime

aiming at the problem of data packet loss caused by swinging of signal in the complex sea-level channel environment

a set of communication protocols specially made for the complex marine environment is brought forward in order to achieve highly reliable sea-level data transmission. Through experiments

it is verified that this satellite communication and positioning system is able to realize highly reliable real-time large-volume data communication. In addition

the design of this system will provide the deep-sea buoy and other unmanned detectors with a feasible program for remote monitoring and data transmission.